Trimaran sailboat



FIG. 1 is a top and right side perspective view of a trimaran sailboat showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a top plan view thereof without the sail, the sail has been omitted for clarity of illustration. 

The ornamental design for a trimaran sailboat, as shown and described. 